Merge pull request #84 from hudl/API_v2_changes

Api v2 changes
Moved the cached parameter to a static class, then changed all of the navigation
to use GoBack() for the back button instead of NavigateToViewModel().
Merge remote-tracking branch 'origin/staticCachedDataClass' into KingRelease_VideoPageCache

Conflicts:
	HudlRT/ViewModels/HubViewModel.cs
	HudlRT/ViewModels/SectionViewModel.cs
This got messed up in the merge.